What is the function of the throttle position sensor?

Function of throttle position sensor: It is a device to detect the engine state. Its main function is to detect whether the engine is idling or loading, accelerating or decelerating. Throttle position sensor, also known as throttle opening sensor or throttle switch, is a device for detecting engine state. It is essentially a variable resistor and several switches installed on the throttle body. The rotating shaft of the resistor is linked with the throttle valve, and there are two types: full open contact and idle contact. When the throttle is in the idle position, the idle contact is closed and the idle state signal is output to the computer. When the throttle is in other positions, the idle contact opens and outputs voltage signals at different angles relative to the throttle. The computer can identify the engine load according to the signal voltage value. According to the rising or falling rate of the signal voltage in a certain period of time, whether to accelerate or decelerate is identified. According to these working conditions, the computer corrects the fuel injection quantity or controls the fuel cut-off.